am 652e5c7e: Merge "docs: Describe the alloc tracker in Android Studio" into klp-modular-docs
* commit '652e5c7ef1f8176dc680f7c4ba782164269b03b0': docs: Describe the alloc tracker in Android Studio
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@@ -19,6 +19,7 @@ page.title=Debugging with Android Studio
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<li><a href="#breakPointsDebug">Debug your app with breakpoints</a></li>
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</ol>
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</li>
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<li><a href="#allocTracker">Track Object Allocation</a></li>
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<li><a href="#deviceMonitor">Analyze Runtime Metrics to Optimize your App</a></li>
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<li><a href="#screenCap">Capture Screenshots and Videos</a></li>
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</ol>
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@@ -281,6 +282,47 @@ step:</p>
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<p class="img-caption"><strong>Figure 7.</strong> The Variables view in the Debug tool window.</p>
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<h2 id="allocTracker">Track Object Allocation</h2>
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<p>Android Studio lets you track objects that are being allocated on the Java heap and see which
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classes and threads are allocating these objects. This allows you to see the list of objects
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allocated during a period of interest. This information is valuable for assessing memory usage
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that can affect application performance.</p>
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<p>To track memory allocation of objects:</p>
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<ol>
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<li>Start your app as described in <a href="#runDebug">Run Your App in Debug Mode</a>.</li>
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<li>Click <strong>Android</strong> <img src="{@docRoot}images/tools/as-android.png" alt=""
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style="vertical-align:bottom;margin:0;height:20px"/> to open the <em>Android DDMS</em>
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tool window.</li>
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<li>On the <em>Android DDMS</em> tool window, select the <strong>Devices | logcat tab</strong>.</li>
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<li>Select your device from the dropdown list.</li>
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<li>Select your app by its package name from the list of running apps.</li>
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<li>Click <strong>Start Allocation Tracking</strong>
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<img src="{@docRoot}images/tools/as-allocstart.png" alt=""
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style="vertical-align:bottom;margin:0;height:20px"/></li>
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<li>Interact with your app on the device.</li>
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<li>Click <strong>Stop Allocation Tracking</strong>
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<img src="{@docRoot}images/tools/as-allocstop.png" alt=""
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style="vertical-align:bottom;margin:0;height:20px"/></li>
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</ol>
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<p>Android Studio shows the objects that the system allocated with the following information:</p>
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<ul>
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<li>Allocation order</li>
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<li>Allocated class</li>
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<li>Allocation size</li>
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<li>Thread ID</li>
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<li>Allocation method, class, and line number</li>
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<li>Stack trace at the point of allocation</li>
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</ul>
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<img src="{@docRoot}images/tools/as-alloctrack.png" alt="" width="750" height="252" />
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<p class="img-caption"><strong>Figure 8.</strong> Object allocation tracking in Android Studio.</p>
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<h2 id="deviceMonitor">Analyze Runtime Metrics to Optimize your App</h2>
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<p>Even if your application does not generate runtime errors, this does not mean it is free of
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